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Home / Doubts and Solutions/JEE/Mathematics

quez 4 , 7 and 11

Asked by rbhatt16 12th October 2017, 5:24 PM
Answered by Expert
Answer:
begin mathsize 16px style 4. Use space begin inline style sum for straight n of end style space straight t subscript straight n space equals space straight S subscript straight n 7. begin inline style sum from straight r equals 1 space to straight n of end style straight r squared space minus space begin inline style sum from straight m equals 1 to straight n of end style space begin inline style sum from straight r equals 1 to straight m of end style space straight r Using space formulae space on space summation space simplify space it space further. 11. For space this space you space can space use space indirect space method space to space check space which space option space is space correct. Taking space 2 space terms space adding space them space and space check space options space putting space as space straight n equals 2. That space should space be space verified. end style
Answered by Expert 19th December 2017, 5:34 PM
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